负压技术对高透氧化锆陶瓷与树脂水门汀粘接强度的影响
Effect of sub-pressure technique on the bond strength of high-translucent zirconia ceramics to resin cement
王培 1马永平 1柴勇 1魏朝 1刘颖先 1孔中楠 1崔玮1
作者信息
摘要
目的 研究负压技术对高透氧化锆陶瓷与树脂水门汀粘接强度的影响.方法 将36个抛光后的高透氧化锆试件随机分为4组(n=9):对照组(C)无表面处理;喷砂组(SB),50 μm Al2O3均匀喷砂20 s;负压组(SU),试件涂布处理剂后给予0.04 MPa负压进行处理;喷砂+负压组(SSU),经喷砂处理的试件涂布处理剂后进行负压处理.各组随机抽取1个试件进行扫描电子显微镜(SEM)进行表面观察,其余试件应用万能力学实验机进行剪切强度测试,体视显微镜下观察断裂模式,并对结果进行统计学分析.结果 SEM结果显示喷砂组试件粘接表面改变明显,负压组表面形貌与对照组相似,经过负压处理后的试件表面粘接剂分布更佳均匀.经过喷砂处理的SB(18.54±0.88)组和SSU组(20.74±2.00)相对于未经喷砂处理的C组(13.52±0.56)SU组剪切粘接强度明显提高(P＜0.05),且SSU组的剪切粘接强度明显大于SB组,该结果有统计学意义(P＜0.05),除此以外SSU组混合破坏最多.结论 喷砂处理能有效提高高透氧化锆与树脂粘接剂间的粘接强度,单纯使用负压技术虽然不能改善粘接效果,但是与喷砂联合使用能明显提高粘接强度.
Abstract
Objective To investigate the effect of sub-pressure technique on the bond strength of high-translucent zirconia ceramics with resin cement.Methods Thirty-six polished high-translucent zirconia specimens were randomly divided into four groups(n=9):control group(C)without surface treatment;sandblasting group(SB),50 μm A12O3 uniformly blasted for 20 s;sub-pressure group(SU),specimens coated with treatment agent and then treated with 0.04 MPa sub-pressure;sandblasting+sub-pressure group(SSU),sandblasted specimens coated with treatment agent and then treated with sub-pressure.One specimen of each group was randomly selected for scanning electron microscopy(SEM)for surface observation,and the rest of the specimens were applied to the universal mechanical testing machine for shear strength testing and fracture mode observation under the body microscope,and the results were statistically analyzed.Results The SEM results showed that the high-translucent zirconia bonding surface was significantly changed in the sandblasted group,and there was no difference between the sub-pressure group and the control group,and the surface adhesive was better distributed on the specimens after sub-pressure treatment.The shear bonding adhesive strength of SB(18.54±0.88)and SSU(20.74±2.00)groups treated with sandblasting was significantly higher(P＜0.05)than that of the non-sandblasted C(13.52±0.56)SU group,and the shear bonding adhesive strength of SSU group was significantly greater than that of SB group,and it was statistically significant(P＜0.05),except for SSU group had the most mixed damage.Conclusion Sandblasting treatment can effectively improve the bond strength between high-translucent zirconia and resin bonding agent,the use of sub-pressure technique alone cannot improve the bonding effect,the combined use with sandblasting can significantly improve the bond strength.
关键词
负压/高透氧化锆/剪切粘接强度Key words
Sub-pressure/High-translucent zirconia/Shear bond strength引用本文复制引用
出版年
2024
NETL
NSTL
万方数据